Rotary Microtome HM 340 E
MICROM International GmbH
Robert-Bosch-Str. 49
D- 69190 Walldorf 386 200 - English
2-12-3 KNIFE CARRIER C
a) Inserting the knife
To insert the knife, the clamping screws (fig.
16.10) must be unscrewed slightly so the knife can
be pushed in from the side. The height of the knife
is adjusted with the two knurled nuts (fig. 16.6)
and the bar (fig. 16.7). If the cutting zone of the
knife cannot be used anymore, it can be moved
over its entire length to the left and right side by
loosening the clamping screws. This allows an
optimal use of the entire knife edge.
CAUTION! When clamping the knife, please
tighten the two clamping screws (fig. 16.10)
simultaneously.
b) Adjusting clearance angle
The clearance angle between cutting edge and
specimen can be shifted and adjusted to the
requirements of the tissue to be sectioned. Loosen
the clamping lever (fig. 16.4) on the right side of
the knife carrier and move the upper part of the
knife carrier (fig. 16.2) on the base (fig. 16.1). The
adjusted clearance angle can be read on the side
scale. Then turn the clamping lever (fig. 16.4)
upwards to lock in the new clearance angle.
NOTE! By experience, usable cuts are only
achieved at a clearance angle of 10° or more.
If the clamping lever (fig. 16.4) is loosened, the
upper part of the knife carrier can be moved 1 cm
to the left or right side. This way, the cutting edge
can optimally be used.
c) Moving the knife carrier on the
dovetail guide
Loosen the clamping lever (fig. 16.5) on the left
side of the knife carrier to move the carrier
forwards and backwards on the dovetail guide.
This allows a rough adjustment of knife and
specimen.
d) Protection against injury
The knife carrier is equipped with two knife
guards (fig. 16.9) which can be moved sideways.
These knife guards should be pushed together in
the middle while adjusting knife or specimen. This
reduces the danger of injury considerably.
e) Central clamping plate
The knife is clamped and stabilized in the cutting
zone by the central clamping plate (fig. 16.8.1,
16.8.2) - exactly where the highest cutting forces
are applied.
NOTE ! Two types of clamping plates are
available for the knives:
clamping plate c for c-knives,
clamping plate d for d-knives.
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